Folding door and shutter



MANUEL BRETOS Y CLAVEHIA. FOLDING DOOR AND SHUTTER.

APPLICATION FILED AUG,26|1920.

1 ,405,758. Patented Feb. 7, 1922..

3 SHEETS-SHEET I.

MANUEL BRETOS Y CLAVE RIA.

FOLDING DOOR AND SHUTTER.

APPLICATION FILED AUGJG, 1920.

1,405,758. Patented Feb. 7, 1922.

3 SHEETS-SHEET 2- MANUEL BRETOS Y CLAVERIA.

FOLDING DOOR AND SHUTTER.

3 SHEETS-SHEET 3- UNITED STATES uANUELnnnrosv CLAVERIA, or SANTIAGODE CUBA, com.

FOLDING noon AND SHUTTER.

Specification of Letters Patent. Pate t d F b 7 192 Application filed July 26, 1920; Serial No. 399,154.

To all whom it may concern:

Be it known that I, MANUEL Bnnros Y CLAVERIA, a subject of the King of Spain, residing at No. 22 Gallo Street, Santiago de Cuba, Cuba, have invented a new and useful Folding Door and Shutter, of which the following is a specification.

By means of my improvement I provide a very useful means in the cooperating ele ments of the folding doors and shutters, thus obviating the'deficiencies'which I had discovered by my own experience.

For instance, I obtain a modification in th spring drums of the corrugated meta-llie doors.

Another advantage consists in providing an improvement in the supports for the door axis.

Another advantage consists in prOviding a plate for inserting the locks for doors and shutters.

Another advantage consists in a modification in the safety pins for the holding or fastening latches or bolt-s and in the boltclasp or screw nut adjustment.

Another advantage consists in a hook provided with an embedding arm. for securing the tracks to the door jambs.

Another advantage consists in an improvement in the engaging bolts for the hooks used to raise and lower the door.

Another improvement consists in the modification of said hooks.

Another advantage consists in a pin or door stop placed in the lower part of the metallic corrugated door in order to hold same with the upper jamb post of the door frame.

Other advantages and purposes of the invention will be understood in the course of this description wherein reference is made to the accompanying drawings, where- Fig. 1 represents a general view of the drum.

Fig. 2 represents a section through AB of the same.

Fig. 3 represents a section through C-D of Fig. 1.

Fig. 4.- is a side view of the drum through the face of the cover.

Fig. 5 is a view ofthe holding axle-box of the drum.

ig. 6 s a detail of the lock nut of the ax1ebox.

Fig. is a detail view of the holding or supporting washer of the'rollers. I

F g. 8 is a detail view of a friction roller.

Fig. 9 represents a section through C-D, Of F i e Fig. 10 is a general view of the supporting device.

Fig. 11 is a detail. side view of the same. 7 Fig. 12 is a similar View of the same.

In Figures 1, 2, 3, 4, 5, 6, 7 and 8, 1 represents a'drum provided with its cover 8, havingopenings through which pass the grooved ears 4: of the body of the drum by means of which the pins 9 provide a wedge closing. The bottom of said drum carrles a stock or bushing 2 which constitutes a case or bushing for the friction rollers 13, which are kept in position by means of the washer 15. The cover also carries the same stock. or bushing indicated at 2, being exactly equal to that at the opposite side.

The drum rotates around the axle box which makes a frictional adjustment in the axis of the door. The sockets 2 have at their periphery the perforation 6 through which they can operate the key which w1ll tighten the springs which, as is done in the case of ordinary drums, are rolled up,

in the interior of the drum 1, but in the case herein illustrated the axle box is provided with a claw 13 where the end of the spring 14 is engaged. I

The ends 10 of the axle box have a conical thread provided with the expansion grooves 15, there being secured at each side screw nuts 15, provided with cuts or grooves 17, so that on being operated by means of a suitable key they will tighten the axle box on the shaft.

The drum has around it the eye 10' with which the strap 7 of the door'engages.

In Figs. 9, 10 and 11 and 12 are illustrat- I ed the modifications which Ihave made in the supporting devices of the shaft of the door, which are represented by a supportcrosses the ring 22 The joint of trans,-

' shutters by means of which the door and shutter winding drum are formed by a hollow drum with a fixed bottom, and removable cover, there bein inserted in said bot'roml and the removable cover bushing or sockets which constitute bearing cases or bushes to enclose sets of ball bearings or frictional rollers around the axle box which makes a frictional adjustment in the shafts of the door; fastening devices for the bearings, such as holding washers; a claw arranged in the part of the axle box within the drum, wherein the end of the spring engages as is usually done in all drums; meansto tighten this spring, such as peripheral perforations in the/sockets or stocks; means for-tightening the axle box on the axis, such as expansion grooves; threaded at their conical ends, threaded screw nuts with heads provided with notches in order to facilitate the operation of tightening, means to engage the door strap, such as clasps made from one side of the drum where the strap engages, substantially as 7 herein described.

2. Improvements in folding doors and shutters by means of which a graduate support is provided for the shaft of the d001,

composed of an arm or bracket of any section inserted in the par'ament or facing MANUEL BRETOS y CLAYERIA. 

